Database not coming up due to creating a segment of size failed

WARNING: The system does not seem to be configured optimally. Creating a segment of size 0x00000000f8000000 failed. Please change the shm parameters so that a segment can be created for this size. While this is not a fatal issue, creating one segment may improve performance.

Solution:

root@test01#  projadd -p 100 -U oracle -K "process.max-sem-nsems=(priv,2048,deny)" \

-K "project.max-sem-ids=(priv,1024,deny)" \

-K "project.max-shm-ids=(priv,256,deny)" \

-K "project.max-shm-memory=(priv,12884901888,deny)" ORAPROJ

root@test01#  usermod -K project=ORAPROJ oracle

root@test01#  cat /etc/user_attr

oracle::::type=normal;project=ORAPROJ

root@test01# cat /etc/project

system:0::::

user.root:1::::

noproject:2::::

default:3::::

group.staff:10::::

ORAPROJ:100::oracle::process.max-sem-nsems=(priv,2048,deny);project.max-sem-ids=(priv,1024,deny);project.max-shm-ids=(priv,256,deny);project.max-shm-memory=(priv,12884901888,deny)

process.max-sem-nsems --> Maximum number of semaphores allowed per semaphore set.

project.max-sem-ids --> Maximum number of semaphore IDs allowed for this project.

project.max-shm-ids --> Maximum number of shared memory IDs allowed for this project.

project.max-shm-memory --> Total amount of System V shared memory allowed for this project Size (bytes)

To verify the project setting

 root@test01#su - oracle

[oracle@test01:HIST]$ prctl $$

process: 927: -sh

NAME    PRIVILEGE       VALUE    FLAG   ACTION                       RECIPIENT

process.max-sem-nsems

        privileged      2.05K       -   deny                                 -

        system          32.8K     max   deny                                 -

project.max-shm-memory

        privileged      12.0GB      -   deny                                 -

        system          16.0EB    max   deny                                 -

project.max-shm-ids

        privileged        256       -   deny                                 -

        system          16.8M     max   deny                                 -

project.max-sem-ids

        privileged      1.02K       -   deny                                 -

        system          16.8M     max   deny                                 -